CN104812021A - Method and device for accessing AC (access controller) by AP (access point) - Google Patents
Method and device for accessing AC (access controller) by AP (access point) Download PDFInfo
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- CN104812021A CN104812021A CN201510152660.6A CN201510152660A CN104812021A CN 104812021 A CN104812021 A CN 104812021A CN 201510152660 A CN201510152660 A CN 201510152660A CN 104812021 A CN104812021 A CN 104812021A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
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Abstract
The invention provides a method and a device for accessing an AC (access controller) by an AP (access point). A first AP and a second AP are positioned in the same two-layer network, wherein the first AP is about to access the AC, and the second AP accesses the AC. The method includes the steps: transmitting a first discovery request message in a broadcast mode; receiving a first discovery response message of the second AP responding to the first discovery request message; selecting the available AC for access according to an IP (internet protocol) address of the second AP accessing the AC. The first discovery response message carries the IP address of the second AP accessing the AC. The probability of discovering the available AC by the AP can be increased, and system configuration is simplified.
Description
Technical field
The application relates to network communication technology field, particularly relates to method and device that a kind of AP accesses AC.
Background technology
At WLAN (Wireless Local Area Network, WLAN (wireless local area network)) in network, AP (AccessPoint, access point) and AC (Access Controller, access controller) between transmits data message and control message by CAPWAP (Control And Provisioning of Wireless Access Point, wireless access point control and configuration) tunnel.The first stage that CAPWAP tunnel is set up is AC discovery phase, and namely AP finds the stage of available AC, and AP needs send to AC and find request message, and after AC reply finds response message, continuation performs follow-up flow process and AC sets up CAPWAP tunnel.
AP needed the IP address obtaining AC before AC transmission discovery request message, and the mode obtaining the IP address of AC at present mainly comprises static obtain manner and Dynamic Acquisition mode.When getting the IP address of AC by above-mentioned two kinds of modes, AP is sent by broadcast mode and finds request message, but which requires that AP and AC is in same double layer network, otherwise AP cannot find AC.
Summary of the invention
In view of this, the application provides method and the device of a kind of AP access AC.
Particularly, the application is achieved by the following technical solution:
The application provides a kind of access point AP to access the method for access controller AC, and an AP and the 2nd AP is positioned at same double layer network, wherein, a described AP is the AP of AC to be accessed, described 2nd AP is the AP having accessed AC, and the method is applied to a described AP, comprising:
Send first by broadcast mode and find request message;
Receive described 2nd AP and find according to described first the first discovery response message that request message is responded, described first finds to carry the IP address that described 2nd AP has accessed AC in response message;
Can access with AC according to the IP address choice that described 2nd AP has accessed AC.
The application also provides a kind of access point AP to access the method for access controller AC, and an AP and the 2nd AP is positioned at same double layer network, wherein, a described AP is the AP of AC to be accessed, described 2nd AP is the AP having accessed AC, and the method is applied to described 2nd AP, comprising:
Receive the first discovery request message that a described AP is sent by broadcast mode;
Respond described first to a described AP and find that first of request message finds response message, described first finds to carry the IP address accessing AC in response message, can access according to the IP address choice of described AC to make a described AP with AC.
The application also provides a kind of access point AP to access the device of access controller AC, and an AP and the 2nd AP is positioned at same double layer network, wherein, a described AP is the AP of AC to be accessed, described 2nd AP is the AP having accessed AC, and this application of installation, in a described AP, comprising:
Transmitting element, finds request message for sending first by broadcast mode;
Receiving element, find according to described first the first discovery response message that request message is responded for receiving described 2nd AP, described first finds to carry the IP address that described 2nd AP has accessed AC in response message;
Selected cell, can access with AC for the IP address choice having accessed AC according to described 2nd AP.
The application also provides a kind of access point AP to access the device of access controller AC, and an AP and the 2nd AP is positioned at same double layer network, wherein, a described AP is the AP of AC to be accessed, described 2nd AP is the AP having accessed AC, and this application of installation, in described 2nd AP, comprising:
Receiving element, for receiving the first discovery request message that a described AP is sent by broadcast mode;
Respond unit, find that first of request message finds response message for responding described first to a described AP, described first finds to carry the IP address accessing AC in response message, can access according to the IP address choice of described AC to make a described AP with AC.
As can be seen from foregoing description, when AP directly cannot find available AC, the available AC in AP acquisition current network can have been accessed by other in same double layer network, improve the probability that AP finds available AC, and simplify system configuration, namely in same double layer network, only need configuration AP that reaches the standard grade, the access of other AP in this double layer network can be realized.
Accompanying drawing explanation
Fig. 1 is the WLAN networking schematic diagram shown in the application one exemplary embodiment;
Fig. 2 is the method flow diagram that a kind of AP shown in the application one exemplary embodiment accesses AC;
Fig. 3 is the method flow diagram that a kind of AP shown in another exemplary embodiment of the application accesses AC;
Fig. 4 is the hardware configuration schematic diagram that a kind of AP shown in the application one exemplary embodiment accesses the device place equipment of AC;
Fig. 5 is the structural representation that a kind of AP shown in the application one exemplary embodiment accesses the device of AC;
Fig. 6 is the structural representation that a kind of AP shown in another exemplary embodiment of the application accesses the device of AC.
Embodiment
Here will be described exemplary embodiment in detail, its sample table shows in the accompanying drawings.When description below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawing represents same or analogous key element.Execution mode described in following exemplary embodiment does not represent all execution modes consistent with the application.On the contrary, they only with as in appended claims describe in detail, the example of apparatus and method that some aspects of the application are consistent.
Only for describing the object of specific embodiment at term used in this application, and not intended to be limiting the application." one ", " described " and " being somebody's turn to do " of the singulative used in the application and appended claims is also intended to comprise most form, unless context clearly represents other implications.It is also understood that term "and/or" used herein refer to and comprise one or more project of listing be associated any or all may combine.
Term first, second, third, etc. may be adopted although should be appreciated that to describe various information in the application, these information should not be limited to these terms.These terms are only used for the information of same type to be distinguished from each other out.Such as, when not departing from the application's scope, the first information also can be called as the second information, and similarly, the second information also can be called as the first information.Depend on linguistic context, word as used in this " if " can be construed as into " ... time " or " when ... time " or " in response to determining ".
Figure 1 shows that WLAN networking schematic diagram.Wherein, access point AP1 ~ AP3 is positioned at same double layer network, and is arranged in access controller AC1 or AC2 of outer net by switching equipment SW access.Carry out by CAPWAP tunnel the transmission controlling message and data message between AP and AC, and set up CAPWAP tunnel and first need AP to find AC, namely AP finds available AC, and from available AC, select an AC access, to set up CAPWAP tunnel.
AP finds that the process of AC is from obtaining the IP address of AC, and the mode of the IP address of existing acquisition AC mainly comprises following several:
1. in AP, directly configure the IP address of AC.
2. Option (option) field returned from DHCP (Dynamic Host Configuration Protocol, DHCP) server obtains the IP address of AC.
3. the IP address obtaining AC is resolved by DNS (Domain Name System, domain name system).
4. the IP address of AC is obtained by broadcast mode.
When not configuring the IP address of AC in AP, and in network during non-configuration DHCP server, the IP address of AC all cannot be obtained by front 3 kinds of modes, now, AP can adopt the 4th kind of mode to obtain the IP address of AC, but which requires that AC and AP is positioned at same double layer network, connects for the across a network shown in Fig. 1, the IP address of AC cannot be obtained by broadcast mode, thus cannot find that available AC is to set up CAPWAP tunnel.
For the problems referred to above, the embodiment of the present application proposes a kind of method that AP accesses AC, in the method, an AP sends first by broadcast mode and finds request message, the 2nd AP being arranged in same double layer network with an AP receive this first find request message after, respond first to an AP and find response message, an AP selects available AC to access according to this first discovery response message, wherein, one AP is the AP of AC to be accessed, and the 2nd AP is the AP having accessed AC.
See Fig. 2, access an embodiment flow chart of the method for AC for the application AP, this embodiment is described from an AP side to the process that AP accesses AC.
Step 201, sends first by broadcast mode and finds request message.
As previously mentioned, when an AP all cannot obtain the IP address of AC by front 3 kinds of modes, an AP can send the first discovery request message by broadcast mode.Under the network environment shown in Fig. 1, AC cannot receive the first discovery request message that an AP sends, and therefore, can not respond this first discovery request message.But the 2nd AP being arranged in same double layer network with an AP can receive this and first find request message, and receive this first find request message time respond first to an AP and find response message.
Step 202, receive described 2nd AP and find according to described first the first discovery response message that request message is responded, described first finds to carry the IP address that described 2nd AP has accessed AC in response message.
Step 203, can access with AC according to the IP address choice that described 2nd AP has accessed AC.
After one AP receives the first discovery response message of the 2nd AP response, from this first discovery response message, obtain the IP address that the 2nd AP has accessed AC, and send the second discovery request message according to the IP address of this AC to this AC.AC responds second to an AP and finds response message after receiving the second discovery request message.One AP receives this second discovery response message, and obtains the status information of equipment of this AC from this second discovery response message, such as, and the priority of AC, the loading condition etc. of AC.When an AP gets the status information of equipment of multiple AC, the AC according to corresponding status information of equipment selectivity optimum accesses, and then sets up CAPWAP tunnel with the AC of this best performance and carry out message transmissions.
See Fig. 3, access an embodiment flow chart of the method for AC for the application AP, this embodiment is described from the 2nd AP side to the process that AP accesses AC.
Step 301, receives the first discovery request message that a described AP is sent by broadcast mode.
Because a 2nd AP and AP is positioned at same double layer network, therefore, the 2nd AP can receive the first discovery request message that an AP is sent by broadcast mode.Specifically see the description of abovementioned steps 201, do not repeat them here.
Step 302, respond described first to a described AP and find that first of request message finds response message, described first finds to carry the IP address accessing AC in response message, can access according to the IP address choice of described AC to make a described AP with AC.
2nd AP finds to carry the IP address self having accessed AC in response message respond to an AP first, be specially: the 2nd AP obtains the IP address self having accessed AC from this locality, and this IP address is added in the first discovery response message send to an AP, to make an AP when receiving this first discovery response message, the IP address of AC is obtained from this first discovery response message, to send second of clean culture to this AC finding request message, and after finding response message receive this AC response second, status information of equipment according to the AC carried in this second discovery response message determines whether to select this AC to access, thus complete CAPWAP tunnel foundation.
Now still for Fig. 1, introduce the process that AP accesses AC in detail.
Suppose, current AP1 accesses AC1, and AP2 accesses AC2.
When there being new access point AP3 to access, due to the IP address of the AC of configuring static non-in AP3, and cannot by the IP address of the available AC in Dynamic Host Configuration Protocol server Dynamic Acquisition current network, therefore, AP3 sends first by broadcast mode and finds that request message finds available AC.Because AC1, AC2 and AP3 be not all in same double layer network, therefore, discovery response message cannot be responded to AP3.But, AP1 and AP2 be in same double layer network with AP3 can receive this and first find request message, therefore, AP1 and AP2 responds first respectively to AP3 and finds response message, and the IP address of the AC carrying self access in response message is found first, namely AP1 finds the IP address of carrying AC1 in response message send first, and AP2 finds the IP address of carrying AC2 in response message send first.
AP3 finds to obtain the IP address of AC1 and the IP address of AC2 response message from first, namely indirectly gets the available AC in current network after receiving the first discovery response message of AP1 and AP2 transmission.AP3 sends the second discovery request message of clean culture respectively to AC1 and AC2 according to the IP address information obtained.According to receive second, AC1 and AC2 finds that request message is responded second and found response message, and find to carry respective status information of equipment in response message respond second.
Suppose, AP3 selects access AC according to the loading condition of AC, then, when according to status information of equipment, AP3 knows that the AP quantity accessed in AC1 is less than the AP quantity accessed in AC2, select AC1 access, and then sets up CAPWAP tunnel with AC1 and carry out transfer of data.
As can be seen from foregoing description, when AP directly cannot find available AC, the available AC in AP acquisition current network can have been accessed by other in same double layer network, improve the probability that AP finds available AC, and simplify system configuration, namely in same double layer network, only need configuration AP that reaches the standard grade, the access of other AP in this double layer network can be realized.
Corresponding with the embodiment that aforementioned AP accesses the method for AC, present invention also provides the embodiment that AP accesses the device of AC.
The embodiment that the application AP accesses the device of AC can be applied on an AP or the 2nd AP.Device embodiment can pass through software simulating, also can be realized by the mode of hardware or software and hardware combining.For software simulating, as the device on a logical meaning, be that computer program instructions corresponding in the processor run memory by its place equipment is formed.Say from hardware view, as shown in Figure 4, a kind of hardware structure diagram of the device place equipment of AC is accessed for the application AP, except the processor shown in Fig. 4, network interface and memory, in embodiment, the equipment at device place is usually according to the actual functional capability of this equipment, other hardware can also be comprised, this is repeated no more.
Please refer to Fig. 5, for the AP in the application's embodiment accesses the structural representation of AC device.This AP accesses AC device and comprises transmitting element 501, receiving element 502 and selected cell 503, wherein:
Transmitting element 501, finds request message for sending first by broadcast mode;
Receiving element 502, find according to described first the first discovery response message that request message is responded for receiving described 2nd AP, described first finds to carry the IP address that described 2nd AP has accessed AC in response message;
Selected cell 503, can access with AC for the IP address choice having accessed AC according to described 2nd AP.
Further,
Described selected cell 503, the IP address specifically for having accessed AC according to described 2nd AP has been accessed AC to described 2nd AP and has been sent the second discovery request message; Receive described 2nd AP and accessed AC finds request message response the second discovery response message according to described second, described second finds to carry the status information of equipment that described 2nd AP has accessed AC in response message; The available AC access of the status information of equipment selectivity optimum of AC has been accessed according to described 2nd AP.
Please refer to Fig. 6, for the AP in the application's embodiment accesses the structural representation of AC device.This AP accesses AC device and comprises receiving element 601 and respond unit 602, wherein:
Receiving element 601, for receiving the first discovery request message that a described AP is sent by broadcast mode;
Respond unit 602, find that first of request message finds response message for responding described first to a described AP, described first finds to carry the IP address accessing AC in response message, can access according to the IP address choice of described AC to make a described AP with AC.
Further,
Described response unit 602, specifically for obtaining the IP address having accessed AC; The described IP address having accessed AC being added to described first finds in response message; Respond described first to a described AP and find response message.
In said apparatus, the implementation procedure of the function and efficacy of unit specifically refers to the implementation procedure of corresponding step in said method, does not repeat them here.
For device embodiment, because it corresponds essentially to embodiment of the method, so relevant part illustrates see the part of embodiment of the method.Device embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the application's scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
The foregoing is only the preferred embodiment of the application, not in order to limit the application, within all spirit in the application and principle, any amendment made, equivalent replacements, improvement etc., all should be included within scope that the application protects.
Claims (8)
1. access point AP accesses a method of access controller AC, and it is characterized in that, an AP and the 2nd AP is positioned at same double layer network, wherein, a described AP is the AP of AC to be accessed, and described 2nd AP is the AP having accessed AC, the method is applied to a described AP, comprising:
Send first by broadcast mode and find request message;
Receive described 2nd AP and find according to described first the first discovery response message that request message is responded, described first finds to carry the IP address that described 2nd AP has accessed AC in response message;
Can access with AC according to the IP address choice that described 2nd AP has accessed AC.
2. the method for claim 1, is characterized in that, the described IP address choice having accessed AC according to described 2nd AP can access with AC, comprising:
AC transmission second discovery request message has been accessed to described 2nd AP in the IP address having accessed AC according to described 2nd AP;
Receive described 2nd AP and accessed AC finds request message response the second discovery response message according to described second, described second finds to carry the status information of equipment that described 2nd AP has accessed AC in response message;
The available AC access of the status information of equipment selectivity optimum of AC has been accessed according to described 2nd AP.
3. access point AP accesses a method of access controller AC, and it is characterized in that, an AP and the 2nd AP is positioned at same double layer network, wherein, a described AP is the AP of AC to be accessed, and described 2nd AP is the AP having accessed AC, the method is applied to described 2nd AP, comprising:
Receive the first discovery request message that a described AP is sent by broadcast mode;
Respond described first to a described AP and find that first of request message finds response message, described first finds to carry the IP address accessing AC in response message, can access according to the IP address choice of described AC to make a described AP with AC.
4. method as claimed in claim 3, is characterized in that, described the first discovery response message responding described first discovery request message to a described AP, comprising:
Obtain the IP address having accessed AC;
The described IP address having accessed AC being added to described first finds in response message;
Respond described first to a described AP and find response message.
5. access point AP accesses a device of access controller AC, and it is characterized in that, an AP and the 2nd AP is positioned at same double layer network, wherein, a described AP is the AP of AC to be accessed, and described 2nd AP is the AP having accessed AC, this application of installation, in a described AP, comprising:
Transmitting element, finds request message for sending first by broadcast mode;
Receiving element, find according to described first the first discovery response message that request message is responded for receiving described 2nd AP, described first finds to carry the IP address that described 2nd AP has accessed AC in response message;
Selected cell, can access with AC for the IP address choice having accessed AC according to described 2nd AP.
6. device as claimed in claim 5, is characterized in that:
Described selected cell, the IP address specifically for having accessed AC according to described 2nd AP has been accessed AC to described 2nd AP and has been sent the second discovery request message; Receive described 2nd AP and accessed AC finds request message response the second discovery response message according to described second, described second finds to carry the status information of equipment that described 2nd AP has accessed AC in response message; The available AC access of the status information of equipment selectivity optimum of AC has been accessed according to described 2nd AP.
7. access point AP accesses a device of access controller AC, and it is characterized in that, an AP and the 2nd AP is positioned at same double layer network, wherein, a described AP is the AP of AC to be accessed, and described 2nd AP is the AP having accessed AC, this application of installation, in described 2nd AP, comprising:
Receiving element, for receiving the first discovery request message that a described AP is sent by broadcast mode;
Respond unit, find that first of request message finds response message for responding described first to a described AP, described first finds to carry the IP address accessing AC in response message, can access according to the IP address choice of described AC to make a described AP with AC.
8. device as claimed in claim 7, is characterized in that:
Described response unit, specifically for obtaining the IP address having accessed AC; The described IP address having accessed AC being added to described first finds in response message; Respond described first to a described AP and find response message.
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| CN201510152660.6A CN104812021B (en) | 2015-04-01 | 2015-04-01 | A kind of method and device of AP access AC |
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| CN201510152660.6A CN104812021B (en) | 2015-04-01 | 2015-04-01 | A kind of method and device of AP access AC |
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| CN105682184A (en) * | 2016-04-12 | 2016-06-15 | 上海斐讯数据通信技术有限公司 | Method and system for discovering cloud access controller via access point |
| CN106453678A (en) * | 2016-09-29 | 2017-02-22 | 北京东土科技股份有限公司 | IP address allocation method and system |
| CN106817692A (en) * | 2017-03-16 | 2017-06-09 | 上海斐讯数据通信技术有限公司 | The collocation method and WAP of a kind of WAP |
| CN107071082A (en) * | 2017-03-22 | 2017-08-18 | 上海斐讯数据通信技术有限公司 | The acquisition methods and system of a kind of IP address of access control equipment |
| CN108901082A (en) * | 2018-06-20 | 2018-11-27 | 新华三技术有限公司 | A kind of cut-in method and device |
| CN114363994A (en) * | 2021-09-27 | 2022-04-15 | 北京小米移动软件有限公司 | Method, device and system for accessing network by node, electronic equipment and storage medium |
| CN115348237A (en) * | 2022-08-04 | 2022-11-15 | 广西电网有限责任公司百色供电局 | IP address configuration method and AP equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106817692A (en) * | 2017-03-16 | 2017-06-09 | 上海斐讯数据通信技术有限公司 | The collocation method and WAP of a kind of WAP |
| CN107071082A (en) * | 2017-03-22 | 2017-08-18 | 上海斐讯数据通信技术有限公司 | The acquisition methods and system of a kind of IP address of access control equipment |
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| CN114363994A (en) * | 2021-09-27 | 2022-04-15 | 北京小米移动软件有限公司 | Method, device and system for accessing network by node, electronic equipment and storage medium |
| CN114363994B (en) * | 2021-09-27 | 2024-04-30 | 北京小米移动软件有限公司 | Method, device and system for node network access, electronic equipment and storage medium |
| CN115348237A (en) * | 2022-08-04 | 2022-11-15 | 广西电网有限责任公司百色供电局 | IP address configuration method and AP equipment |
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| Publication number | Publication date |
|---|---|
| CN104812021B (en) | 2018-12-25 |
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